To set the height of a tape cartridge auto-loader to 2U even in the case of any maker's tape drive, in the tape cartridge auto-loader.

A tape cartridge picker 102 includes a rotary board elevating mechanism 150 for elevating a rotary board 140 for supporting the tape cartridge 10. According to the types of attached tape drives 101, the height position of the rotary board 140 is changed to the three stages of HS, HH and HL. Thus, even the tape drive where the position of a tape cartridge insertion port is low is attached directly through no base.